you can use a quarter !! drill small hole 1st. then keep shank of drill bit in hole while hammering outside rim. THEN, support drill bit on 2 small blocks so coin does not touch anvil and hammer some more. the drill bit becomes an "internal anvil" and spreads the inside. No need to wast...
because people with long hair are intrinsically more intelligent and creative. People with short hair are naturally dullards.